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dc.contributor.author
Messina, S.
dc.contributor.author
Lanzafame, A. C.
dc.contributor.author
Feiden, G. A.
dc.contributor.author
Millward, M.
dc.contributor.author
Desidera, S.
dc.contributor.author
Buccino, Andrea Paola
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dc.contributor.author
Curtis, I.
dc.contributor.author
Jofre, Jorge Emiliano
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dc.contributor.author
Kehusmaa, P.
dc.contributor.author
Medhi, B. J.
dc.contributor.author
Monard, B.
dc.contributor.author
Petrucci, Romina Paola
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dc.date.available
2017-08-01T17:42:19Z
dc.date.issued
2016-11
dc.identifier.citation
Messina, S.; Lanzafame, A. C.; Feiden, G. A.; Millward, M.; Desidera, S.; et al.; The rotation - Lithium depletion correlation in the beta Pictoris association and LDB age determination; EDP Sciences; Astronomy and Astrophysics; 596; A29; 11-2016; 1-7
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/21706
dc.description.abstract
There is evidence in the 125-Myr Pleiades cluster, and more recently in the 5-Myr NGC 2264 cluster, that rotation plays a key role in the Lithium (Li) depletion processes among low-mass stars. Fast rotators appear to be less Li-depleted than equal-mass slow rotators. We intend to explore the existence of a Li depletion - rotation connection among the beta Pictoris members at an age of about 24 Myr, and to use such correlation either to confirm or to improve the age estimate based on the Lithium Depletion Boundary (LDB) modeling. We have photometrically monitored all the known members of the beta Pictoris association with at least one Lithium equivalent width (Li EW) measurement from the literature. We measured the rotation periods of 30 members for the first time and retrieved from the literature the rotation periods for other 36 members, building a catalogue of 66 members with measured rotation period and Li EW. We find that in the 0.3 < M < 0.8 Msun range, there is a strong correlation between rotation and Li EW. For higher mass stars, no significant correlation is found. For very low mass stars in the Li depletion onset, at about 0.1 Msun, data are too few to infer a significant correlation. The observed Li EWs are compared with those predicted by the Dartmouth stellar evolutionary models that incorporate the effects of magnetic fields. After decorrelating the Li EW from the rotation period, we find that the hot side of the LDB is fitted well by Li EW values corresponding to an age of 25±3 Myr in good agreement with independent estimates from the literature.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Stars: Activity
dc.subject
Stars: Late-Type
dc.subject
Stars: Rotation
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Stars: Starspot
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Stars: Individual: Beta Pictoris Association
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Stars: Abundances
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The rotation - Lithium depletion correlation in the beta Pictoris association and LDB age determination
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-31T18:04:42Z
dc.journal.volume
596
dc.journal.number
A29
dc.journal.pagination
1-7
dc.journal.pais
Francia
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dc.journal.ciudad
Paris
dc.description.fil
Fil: Messina, S.. Catania Astrophysical Observatory; Italia
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Fil: Lanzafame, A. C.. Catania Astrophysical Observatory; Italia
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Fil: Feiden, G. A.. Uppsala University; Suecia
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Fil: Millward, M.. York Creek Observatory; Australia
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Fil: Desidera, S.. Osservatorio Astronomico Di Padova; Italia
dc.description.fil
Fil: Buccino, Andrea Paola. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
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Fil: Curtis, I.. Minor Planet Center; Australia
dc.description.fil
Fil: Jofre, Jorge Emiliano. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Kehusmaa, P.. Harlingten Atacama Observatory; Chile
dc.description.fil
Fil: Medhi, B. J.. Aryabhatta Research Institute Of Observational Sciences; India
dc.description.fil
Fil: Monard, B.. Klein Karoo Observatory; Sudáfrica
dc.description.fil
Fil: Petrucci, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/12/aa28524-16/aa28524-16.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/ 10.1051/0004-6361/201628524
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